html {
    width: 100%;
}
body {
    width: 660px;
    margin: 0 auto;
    padding-top: 1em;
}
.form-line:not(:first-child) {
    margin-top: 0.5em;
}
.form-line input[type="text"] {
    line-height: 1.36em;
    height: 1.39em;
    padding-left: 0.25em;
}
.note-content {
    padding: 0.2em;
    vertical-align: top;
    resize: vertical;
    font-size: 1.09em;
}
.btn-line {
    text-align: center;
    padding-top: 0.3em;
}
.btn-line > button {
    margin-left: 1em;
    padding: 0.1em 0.8em;
    border-radius: 2px;
    background-color: white;
    color: black;
    border: 1px solid #0366d6;
    transition-duration: 0.4s;
    text-decoration: none;
    font-size: 16px;
    cursor: pointer;
    vertical-align: middle;
}
.btn-line > button:hover {
    background-color: #2f8af1;
    color: #fff;
}